Smod: Outbreak - Gameplay Video
Smod: Outbreak by "veteran_gamer" is a mod of Smod and is focused on a more Arcade look on Half Life 2. It Adds hordes of Zombies as well as many other new enemies and characters into the game creating an even more innovative experience.
Unfortuanately the relsease was pulled down. But a more Updated better version is coming out with first quarter of this year.
Be sure to leave a friendly comment for "veteran_gamer" after all he's the only one working on this mod.
Song is "Teardrop" by "Massive Attack"